Development

Nidalee was rumored to have a special stackable damage over time that could be applied by all her damaging abilities as well as Prowl granting her stealth for 2 seconds when leaving brush in cougar form (both effects actually existed and were removed prior to her release)

Nidalee used to have a bug where Primal Surge applied Swipe's damage (meaning she could kill her teammates if they were low enough)

Quotes

Nidalee is one of the few champions to have an extra set of emote animations (taunt, laugh, and dance animations each for human and for cougar, without voice changes)